SPLIT NUT Russian patent published in 1997 - IPC

FIELD: drives used in screw-cutting lathes. SUBSTANCE: split nut contains two bodies of half-nuts 1 fitted movably in guides of apron 4, disk with shaped slots 10, dowel pins 3 pressed in half-nuts and used for engagement with shaped slots 10 of disk, shaft 6 of disk drive provided with spring 9 made in form of rod whose one end is connected with shaft 6 and other end is connected with disk and double-slider coupling 11 mounted between shaft and disk and used for engagement with it. Proposed nut is self-setting in vertical plane relative to motion screw where misalignment of parts of screw pair is most likely to occur. EFFECT: enhanced reliability. 3 dwg